Building SaaS with Python and Django

On Wednesdays at 9pm Eastern Time, I develop a Software as a Service (SaaS) on Twitch.

My primary goal is to teach people about the Django web framework and Python.

Django is a big web framework so I share my experience from using the project for 6+ years.

This page contains show notes and links to each stream. Join me live if you’re interested!

  • #Python
  • #Django
  • #views

Displaying Breaks - Building SaaS #72

In this episode, I worked to add breaks to the display of the week schedule. We had to update context to include the break information into the schedules. I refactored a method out of the calendar display code to make some reusable logic for handling breaks.

  • #Python
  • #Django
  • #views

Custom Form Validation - Building SaaS #71

In this episode, I added some custom checking to ensure that students may only be enrolled in a single grade level for a school year. We talked about form cleaning and wrote a for unit test to prove that the change worked. After that change, we switched to a template and wrote copy for when no progress reports are viewable for users.

  • #Python
  • #Django
  • #views

Predicting The Future - Building SaaS #70

In this episode, we worked on two issues. The first issue was fixing incorrect projected completion dates of tasks. We used test driven development to reveal the bug and work on the fix. The second issue add some extra data to display on a page.

  • #Python
  • #Django
  • #views

Polishing and Usability - Building SaaS #69

In this episode, we polished some parts of the application. Now that my first customer is using the app regularly, the feedback is coming in rapidly. We worked to fix some of the issues that she found.

  • #Python
  • #Django
  • #views

Rendering Calendars - Building SaaS #68

In this episode, I worked on rendering a calendar of important events in a school year. We built out the appropriate data structures, and I wrote some new model methods and added tests.

  • #Python
  • #Django
  • #models

Give Me A Break... Day - Building SaaS #67

In this episode, we did some Django model development. I created a new model to track break days in a school year. This model will be critical to fill in vacations and holidays so that the scheduling functionality works properly. I added the model, the tests, the admin page, and the create view to create break days in the app.

  • #Python
  • #Django
  • #views

Docs, Bugs, and Reports - Building SaaS #66

In this episode, I created documentation for anyone interested in trying out the application. After documenting the setup, I moved on to fixing a bug with the scheduling display of courses. In the latter half of the stream, we focused on creating a new reports section to show progress reports for students.

  • #Python
  • #Django
  • #models

Handle Default Values - Building SaaS #65

In this episode, I updated a model to handle the default duration of new tasks. This default needed to come from the Course model instead of the CourseTask model so we had to determine how best to set that data in various forms. I also fixed some drop down selection bugs that populated a form with the wrong data. We made sure that all the code was well tested.

  • #Python
  • #Django
  • #templates

Enrolling Students - Building SaaS #64

In this episode, we worked on a view to enroll students into a grade level for the school year. I added all the context data and used Tailwind to design the form layout to pick from a list of available grade levels. We added a variety of unit tests to prove the correctness.

  • #Python
  • #Django
  • #models

The Home Stretch - Building SaaS #63

In this episode, we return to the homeschool application that I’m building. I’m in the final stretch of changes that need to happen to make the product minimally viable. We worked on a template, wrote some model methods, and did a bunch of automated testing.

  • #Python
  • #Django
  • #hackathon

Hackathon App Part 2 - Building SaaS #62

In this episode, we took a break from the regular app to work on an app for a local hackathon that I’m participating in. This is the second week for the hackathon and in this stream, I apply the final touches to the application. We work on models, a template, and build an RSS feed using Django syndication contrib app.

  • #Python
  • #Django
  • #hackathon

Hackathon App - Building SaaS #61

In this episode, we took a break from the regular app to work on an app for a local hackathon that I’m participating in. My team is building a mobile web app for the homeless around Frederick, MD. In this stream, we cranked through some modeling, admin building, a couple of pages, tests, and templates! We got a lot done!

  • #Python
  • #Django
  • #views

A View From Start To Finish - Building SaaS #60

In this episode, I created a view to add students from beginning to the end. I used Error Driven Development to guide what I needed to do next to make the view, then wrote tests, and finished it all off by writing the template code.

  • #Python
  • #Django
  • #views

Designing A View - Building SaaS #59

In this episode, I focused on a single view for adding a course to a school year. This view is reusing a form class from a different part of the app and sharing a template. We worked through the details of making a clear CreateView.

  • #Python
  • #Django
  • #templates

Bread and Butter Django - Building SaaS #58

In this episode, I worked on a views and templates. There are a number of core pages that are required to flesh out the minimal interface for the app. We’re building them.

  • #Python
  • #Django
  • #pytest
  • #testing

Switch A Django Project To Use Pytest - Building SaaS #57

In this episode, I replaced the default Django test runner to use pytest. We walked through installation, configuration, how to change tests, and the benefits that come from using pytest.

  • #Python
  • #Django
  • #bugs

How To Fix A Bug - Building SaaS #56

In this episode, we picked an issue from GitHub and worked on it. I explained the flow of using test driven development to show how the bug existed in an automated test. We wrote the test, then fixed the code. After that, we did some test refactoring to clean things up.

  • #Python
  • #Django
  • #models

Remodeling Data Relationships - Building SaaS #55

In this episode, we’re remodeling! I changed the model relationship between GradeLevel and Course from a ForeignKey (1 to many) to a ManyToManyField. We talked through the change and started fixing all the tests that broke.